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author | Alan Maguire <[email protected]> | 2022-03-30 16:26:38 +0100 |
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committer | Andrii Nakryiko <[email protected]> | 2022-04-03 19:55:57 -0700 |
commit | 39f8dc43b7a05ab0e352655a14a9d613c2308b92 (patch) | |
tree | 32ebf3438890623070e52d37c9cff2944ef2cb1b /tools/testing/selftests/bpf/prog_tests/uprobe_autoattach.c | |
parent | 433966e3ae04165811b116af492a684bad7a158c (diff) |
libbpf: Add auto-attach for uprobes based on section name
Now that u[ret]probes can use name-based specification, it makes
sense to add support for auto-attach based on SEC() definition.
The format proposed is
SEC("u[ret]probe/binary:[raw_offset|[function_name[+offset]]")
For example, to trace malloc() in libc:
SEC("uprobe/libc.so.6:malloc")
...or to trace function foo2 in /usr/bin/foo:
SEC("uprobe//usr/bin/foo:foo2")
Auto-attach is done for all tasks (pid -1). prog can be an absolute
path or simply a program/library name; in the latter case, we use
PATH/LD_LIBRARY_PATH to resolve the full path, falling back to
standard locations (/usr/bin:/usr/sbin or /usr/lib64:/usr/lib) if
the file is not found via environment-variable specified locations.
Signed-off-by: Alan Maguire <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/uprobe_autoattach.c')
0 files changed, 0 insertions, 0 deletions